Toilet tank



FIG. 1 is a perspective view of an embodiment of the claimed design;

FIG. 2 is a front view of the embodiment of FIG. 1;

FIG. 3 is a rear view of the embodiment of FIG. 1;

FIG. 4 is a side view of the embodiment of FIG. 1;

FIG. 5 is another side view of the embodiment of FIG. 1;

FIG. 6 is a top view of the embodiment of FIG. 1; and,

FIG. 7 is a bottom view of the embodiment of FIG. 1.

The ornamental design which is claimed is shown in solid lines in thedrawings: The broken lines in the drawings are for illustrative purposesonly and form no part of the claimed design. Broken lines formed ofunequal length dashes (i.e., dash-dot) define bounds of the claimeddesign.

CLAIM I claim the ornamental design for a toilet tank, as shown anddescribed.